Portage 2.2, the new features

[node_one]

Is there a place where I can get more information about the new portage 2.2 features, particularly about packages sets. I tried searching, but did not find what I was looking for. I would like to know if/how users can create and manage package sets. Are package sets going to replace meta packages like kde-meta? Also, is portage 2.2 going to be on the 2008.0 media or stage3?

[kernelOfTruth]

[Thargor]

edit: First draft of an upgrade guide by genone: http://dev.gentoo.org/~genone/docs/portage-2.2-upgrade-doc
You should treat my post as a quick overview and read the link above because genone knows portage a lot better than me .
Note that parts of the upgrade doc only apply to the not yet released _rc2

Here are some facts I know:

• No, it's not going to be on 2008.0, as these snapshots were taken a few weeks(/months?) ago and it is still package.masked nowadays.
  
• Set support. It works like this:

  Code:

  emerge @setname

  Note that system and world are also sets, but can be used without the @, Just like it was before,

  Code:

  emerge world

  Also note, that world no longer includes system by default. Use this to revert to the old behaviour:

  Code:

  emerge --noreplace system

  If you want system to stay out of world, you have to use -1/--oneshot every time you emerge system.
  There is also a set that contains all installed packages. It is called @everything in <=_rc1, but has been renamed and will be @all-installed in >=_rc2
  
• USE DEPENDENCIES[1]! (please paludis folks, stop telling others it will take 6 years for this to get into portage (No offense ment, it's just that I read that a few times in the past)
  For the ones which are not into ebuild developing that much: This will kill the anoying 'you have to build foo with useflag bar to emerge this package' messages.
  
• FEATURES="preserve-libs": This is basically revdep-rebuild integrated into portage. It tells you when you have to use it with a message like this:

  Code:

  !!! existing preserved libs: >>> package: media-libs/mesa-7.1_rc1  *  - /usr/lib64/libGLU.so.1.3  *  - /usr/lib64/libGLU.so.1.3.070003

  Then you can use it like this:

  Code:

  emerge -1av @preserved-rebuild

  
  And, another advantage over revdep-rebuild: things keep working, because it keeps the old libraries around until you reemerge things. It still has some issues, like preserving to much libs through. Note that this is on by default
  
• FEATURES="unemerge-orphans": portage Now removes files, even if they have changed since they were installed. edit: It seems this is there since portage-2.1.3
  
• -* in package.keywords:

  Code:

  cat/foo -*

  This no longer means that foo will be installed when it has KEYWORDS="-*", but that no keywords are matched (so you can mask things that way) To install things with KEYWORDS="-*", use this:

  Code:

  cat/foo **

  
  
• --keep-going (will be in _rc2): With this option, emerge tries to continue when a package fails, but drops all packages with unsatisfied dependencies.
  Example:

  Code:

  [ebuild  N    ] app-misc/foo-1 [ebuild  N    ]  app-misc/bar-2 [ebuild  N    ] app-misc/baz-1.5

  Let's assume bar-2 fails --> foo-1 cannot be emerged, but emerge will install baz-1.5, because none of it's deps failed.
  Note that --skipfirst also works that way now (is already in _rc1). So if you use emerge --resume --skipfirst in the case above after it failed (without --keep-going), it will refuse to install foo-1. To restore the old behaviour, use --resume --skipfirst --nodeps
  (actually, --keep-going is the result of this new --skipfirst behaviour)

[1] http://bugs.gentoo.org/2272,http://bugs.gentoo.org/174406

That's pretty much everything that comes to my mind right now.

Also check out
http://sources.gentoo.org/viewcvs.py/portage/main/trunk/RELEASE-NOTES?view=markup
and
http://sources.gentoo.org/viewcvs.py/portage/main/trunk/NEWS?view=markup
And, for what will come in the future:
http://sources.gentoo.org/viewcvs.py/portage/main/trunk/TODO?view=markup

EDIT: corrected name of preserve-libs FEATURE and added note about unemerge-orphans being there since 2.1.3
EDIT: added --keep-going, which will be in _rc2 and note about changed --skipfirst, which already is in _rc1
EDIT: added genone's upgrade guide draft and note about the @everything/@all-installed set
_________________
Ideas are bulletproof

[Etal]

Thanks Thargor!
_________________
“And even in authoritarian countries, information networks are helping people discover new facts and making governments more accountable.”– Hillary Clinton, Jan. 21, 2010

[node_one]

Thanks from me too. I just noticed that 2.2_rc1 is now showing up as testing (~) so I guess I will be able to try out some of the new features very soon.

[i92guboj]

Moved from Gentoo Chat to Portage & Programming.
_________________
Gentoo Handbook

[tranquilcool]

/var/lib/portage/world: Validation failed at line: 1444, data kdegraphics-scm*


how can i get over this?
_________________
this is a strange strange world.

[Thargor]

You installed a set from the genkdesvn overlay using paludis, but this set is not recognised/supported by portage.
Either uninstall it using paludis and use portage or stay with paludis, usind both at the same time can lead to problems.
_________________
Ideas are bulletproof

[Grahammm]

[widremann]

Wow, none of this documentation anywhere tells you how to create a fucking set. That's really great. I am trying to use kdesvn overlay and it says install the sets to the "appropriate location", except that nobody ever tells you where the hell that is. None of these links that have been provided explain how to create your own sets. Perhaps somebody here can explain it since apparently it's so obvious that it need not be documented ever.

[spielc]

[widremann]

[Genone]

[Thargor]

You can do even nicer things:

[spielc]

[arnvidr]

[spielc]

[arnvidr]

[Arfrever]

[Bloodsurfer]

[r0bertz]

[Thargor]

[arnvidr]

[tranquilcool]

[arnvidr]